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With the development of science, more new technology ______ to the field of IT.

    A. has introduced           B. is being introduced

  　C. is introduced            D. was introduced

With the development of science, more new technology      to the field of IT.

A. has introduced                                               B. is being introduced  

C. is introduced                                                D. was introduced

 With the development of science, more new technology ______to the field of IT.

 A. has introduced  B. is being introduced  C. is introduced  D. was introduced

With the development of science, more new technology         to the field of IT.